Drier.



No. 693.232. Patented Fab. |l, I902.

C. H. CASPER.

DRIER.

[Application filed June 5, 1901. I

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ATTORNEY.

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Patented Feb, 1902.

G. H. CASPER.

D R l ER. (Application filed June 5, 1901.

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No. 693,232. Pa tented Feb. ll, I902. I

C. H. CASPER.

INVENTOR ATTOFNEY,

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FLJHNAEE J5 J2 UNITED STATES PATENT OFFICE.

CHARLES H. CASPER, OF NEWARK, NEW JERSEY.

DRIER.

SPECIFICATION forming-part of Letters Patent No. 693,232, dated February 11, 1902.

Application filed June 5,1901, Serial No. 3,204. (No model.)

Improvements in Driers; and I do herebyde- I clare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which itappertains to make and use the same, reference being had to the accompanying drawings, and to numerals of reference marked thereon, which form a part of this specification. L This invention refers to a novel construc tion of drier that is both compact and efficient and in which the heat-is utilized so as to insure a quick complete evaporation of the moisture contained in the substance to be dried. The drier herein set forth is adapted to be easily operated and also adjustable to insure tight joints for thehot-air' ducts.

This drier is adapted more particularly for brewers grains or the like; but it is applicas ble to drying other substances. In the drawings,in which similar referencenumerals indicate like parts, Figure l is a central longitudinal vertical section of the drier. Fig. 2 is an end view of the same, and Fig. 3' is a cross-section on line a; as in Fig.1. Figs. 4 and 5 are an end and a side view, respectively, of one end of the upper drum. Fig. 6 is a section on line y'y inFig. 3. Fig. 7 is a section on line .2 z in Fig. 1', and Fig. 8 isa detail perspective ofpaddles and buckets used in this drier. 7 An outside casing of side plates 10 and 11 and end plates 12 and 13, with the hood 14, incloses the two drums of the drier and supports the same. Said hood 14 is provided at its tops with the vapor-outlet 15, as will be evident. The lower drum is formed by the shell 16, which is fastened to the end plates l3andissemicircular. Runninginthisdrum and projecting through perforations in said plates 13 is a revolving agitator and heater. Said agitator is composed of the two end plates 17, which are integral with the pipes 18 and have secured to their inner faces the plates 19, which in turn are provided with perforations, into which are fastened the pipes 20. Connecting said plates 17 and arranged around the periphery of the same are the angleirons 21, which serve to stiffen it and also act as holders for the paddles 22 and the buckets 23. Said agitators run on rollers 24 on the outside of th'ecasing, which bear against -'a sleeve 28 on the pipes 18. The said agitator there by also forms a hot-air conveyer and projects on one endagainst a pipe from the hotair furnace or preferably, as shown, against the furnace-outlet 29, which is provided with an internal flange 30, against which the pipe ;18 bears. On the other end the pipe 18 bears against a similar flange 32 in the box or casing 31, which rests on the base 33 and is backed up by-the upri'ghtarm 34, which holds the adj u'sting-screw 35. 1 It will be evident therefrom that by screwing up on the screw 35 the ,proper pressure can be brought on the gas- {kets resting between the pipes '18 and the fianges 30 and 32 and a tight joint made, and .allwearcan also be taken up, by a turn or .two on the screw. A baffle-plate 17 a is placed fin"the plate l7 nearest the furnace, as shown in Figs. 1 and 7. f

The roller-bearings are made, preferably, as shown in Figs. 1 and 2. A base 25 holds the roller 24 and its standard, and adj ustingjscrew 26 serves to raise or lower the pipe 18, as will be evident, and the agitator can be centered easily.

1 Secured to the upper plates 12 and stiffened by angle-irons at their tops are the two shells 41 and 42, said shell 42 being semicircular and connected at its-top to the shell 41 by plates '43 and ,44, (see Fig. 3,) forming the hot-air envelop 'or chamber 45. On either end of said chamber 45 are a pair of pockets 46 and 47, (seeFigs. 4 and 5,) which on one endireceive the hot air from the'pipes 36 and 37, which lead' it from theboX or casing 31, and the other two pockets emptying intothe pipes 38 and 39, that lead to the exhauster .40, as will be understood from Figs. 1" and 2. The inner shell 41 runs to the top of the. plates 12 and receives the grain. An opening 41 passes through both shells at one end of them and connects with the "lower drum. 1

gether thereon. Across said spiders and connecting them are the angle-irons 48, which I are provided with the paddles 49. The shaft 46 projects through the casing 12 and operates the conveyor 51 in the hopper 50, as in Fig. 1, by means of suitable gearing.

The drier is driven from the pulley 52, which in turn is geared to the gear-wheel 53 on the shaft 46, and the shaft46 and the pipe 18 on the end of the drier nearest the furnace are connected by a chain running over the sprockets 54 and 55, respectively.

The mode of operation is as follows: The grain enters the hopper 50 and is conveyed to the upper drum, Where the paddles 49 agitate and throw the grain, causing it to be well separated, the hot air from the chamber causing the partial drying of the grain or other substance and paddles 49 preventing the same from lying still long enough to be scorched. The construction of the paddles 49 is similar to that of the paddles 22 in the lower drum. (Shown in Fig. 8.) They are made or placed at a slight angle, so as to cause a slight movement of the grain and ad- Vance it slowly along the drum. At the end of the drum is the opening 41, through which the partially-dry grain passes in to the lower dru m. Here it is similarly agitated and advanced by the paddles 22 and also by the buckets 23, which carry it to the top and drop it, allowing it tofall between therevolvingheat-conveying pipes 20. The grain when dry emerges from the door 56 at the end of the lower drum. \Vhen the heat gets too intense and there is danger of the grain burning, a door 2 in the furnace 1 can be opened and a current of cold air allowed toflow in through the hot-air chambers and ducts and thereby cool them off. The drums are open at the top, and all the vapor arising from the substance that is being dried is free to pass out through the opening 15in the hood 14 into a suitable pipe or stack.

Having thus described my invention, what I claim is- 1. In a heater, a drum, a pair of circular plates integral with pipes running in bearings, a series of tubes connecting said plates and communicating with said pipes, a hot-air box or casing on the end of one of said pipes, a hot-air feeding-pipe on the end of the other pipe, shoulders or flanges bearingfagainst the ends of said pipes, a standard for said hot-air casing, an upright arm or arms on said standard, and adj usting-screws bearing on said casing,to adjust the joints of the hot-air pipes, substantially as set forth.

2. In a heater, a casing, a drum, a rotating heater comprising a pair of circular plates integral with pipes running on roller-bearings outside the casing, a series of tubes connecting said plates and communicating with said pipes, a set of angle-irons connecting the peripheries of said plates, and supporting the agitating-plates and buckets a hot-air pipe feeding one end of the rotating heater, and provided with an internal flange and gasket or washer, a hot-air box or easin g on the other end of said heater, provided with an internal flange and a gasket, a standard supporting said hot-air box and provided with an upright support and an adjusting-screw in said support bearing against said box or casing, substantially as set forth.

3. In a drier, a drum, a revolving heater and agitator in said drum, a hot-air box on one end of said heater, a hot-air pipe feeding the other end of the heater, the feed-pipe and box being provided with flanges and gaskets, a standard for supporting the hot-air box, and means on the standard for adjusting the joints, substantially as set forth.

In testimony that I claim the invention set forth above I have hereunto set my hand this 16th day of May, 1901.

CHARLES II. (JASPER.

Witnesses:

WM. I-I. CAMFIELI), Jr., HARRY MARTIN. 

